hi.. i have a tank of about 8-9 gallons accomodated with a pair of shubunkin and a pair of angels[black]. i live in india. last few days the weather was very cold here.. and fish seemed to be slow .. so some of them consulted to put on the heater.. at around 28 o 26 degrees. the fish were quite fine but the next morning.... my shubunkin wer fine ....but my angel died? :(.. after tat is switched off the heater. havent put it on yet. and few days back i chnged my tank water and my angel died..[i had 3 in all.. and shubunkin are small in size] please help if u know anythng.
can i put 2 more shubinkin in the tank.?